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Visaton K 28 WPC 50 Ohm, 1.1 Inch, Waterproof Miniature Speaker

K 28 WPC · 50 Ω · part 2810 — Product photo (shared by the 8 Ω and 50 Ω versions)

Product photo (shared by the 8 Ω and 50 Ω versions) · Enlarge image

K 28 WPC · 50 Ω · part 2810 — Product photo (shared by the 8 Ω and 50 Ω versions)Product photo (shared by the 8 Ω and 50 Ω versions) K 28 WPC · 50 Ω · part 2810 — Rear view and connectionsRear view and connections K 28 WPC · 50 Ω · part 2810 — Dimension drawingDimension drawing K 28 WPC · 50 Ω · part 2810 — Response and impedanceResponse and impedance

Product photographs and manufacturer drawings. Images are not to scale.

K 28 WPC · 50 Ω · part 2810 — Product photo (shared by the 8 Ω and 50 Ω versions)

Product photo (shared by the 8 Ω and 50 Ω versions)

Open original image
Part number: 2810

A 2.8 cm miniature speaker with a Mylar diaphragm for voice and signal output in small devices.

Nominal size
2.8 cm / 1.1 inch
Impedance
50 Ω
Rated power
1 W
Protection
IP65 — front side in a sealed enclosure
Sensitivity
76 dB (1 W/1 m)
Resonance
800 Hz
ex VAT
£4.74 inc VAT
Maximum quantity available reached.

Stock and dispatch
Selected products are held in UK stock; other lines are sourced to order. Dispatch timing depends on the product and quantity.

Delivery information. Need it for a specific date? Ask us.

Quantity discounts

Description

The K 28 WPC is a 2.8 cm miniature speaker with a plastic diaphragm (Mylar), giving a balanced response and good voice reproduction in very small devices. It is functional at cold to EN 60068-2-1/EN 50155, and its IP65 protection applies to the front when it is built into a sealed enclosure. This 50 Ω version handles 1 W and gives 76 dB (1 W/1 m).

Typical applications

  • Monitoring speaker for electronic devices
  • Voice and signal output in small devices
Full specifications
K 28 WPC · 50 Ω
Rated power1 W
Maximum power2 W
Nominal impedance50 Ω
Frequency response (−10 dB)300–20000 Hz
Mean sound pressure level76 dB (1 W/1 m)
Resonance frequency fs800 Hz
Voice coil diameter13.5 mm
Height of winding2 mm
Net weight7 g
TerminalsSolder joints
Protective systemIP65 — front side in a sealed enclosure
Temperature range−40 to 70 °C
DiaphragmMylar (plastic)
Low-temperature testFunctional at cold to EN 60068-2-1 / EN 50155
Dimensions and drawings
K 28 WPC · 50 Ω · part 2810 — Dimension drawing

Dimension drawing · Open original image

Installation and cabinet guidance

No cut-out diameter is published for this driver: the round frame is 28 mm in diameter (25.5 mm behind the flange) and the unit is 5.4 mm deep overall, including the 1 mm flange, with a 16 mm magnet. Size the opening from the unit itself. The frame has no fixing holes, so it is normally bonded or clamped in place; check the method against your enclosure design and keep the clamping even all round. Leave clearance behind the panel for the solder joints and their leads.

The IP65 protection applies to the front of the driver only, and only when it is built into a sealed enclosure; the rear is open to the enclosure. Mount it on a flat panel with a continuous seal around the frame and protect the rear from water and dust; bonding the driver in and fitting a front cover or grille may be needed to complete the protection. Check that the panel face is clean and true where the seal beds down, and seal the cable entry as well, since the rear protection comes from the enclosure rather than from the driver. Operating temperature range −40 to 70 °C.

Solder to the solder joints on the rear, observe polarity and keep the leads clear of the moving parts. Use a suitable iron and keep the soldering time short so that heat is not conducted into the driver. Support the leads so that they cannot pull on the joints. Use an output stage suitable for the 50 Ω load and keep the drive within the 1 W rating (2 W maximum).

This is the 50 Ω version; the 8 Ω version is part 2809. Check the impedance against the amplifier and the installation before ordering.

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